closing the cavity

[andytx]

Hi,

I'm converting a window into French windows, and have cut down and removed the surplus brickwork. The French doors will fit into the outer skin, leaving a cavity before the inner skin.

We'd like to finish the floor right up to the French windows, across the cavity. How do I close the cavity? DPC is at the level the French doors will sit on, and the internal floor is concrete.

Its the cavity at floor level that I'm concerned about. I want something that can be walked on, yet maintaining dpc.

Tia!

 

[Alastairreid]

Drop some dpm into the cavity and backfill concrete to your level.

 

[andytx]

Drop some dpm into the cavity and backfill concrete to your level.

Thanks, that was one idea I had. Needed another opinion first though! Thanks...

 

[MIKALAN]

Hi,

Tia!

vermiculite moisture resistance back fill and screed to required level

 

[andytx]

vermiculite moisture resistance back fill and screed to required level

Err... What's vermiculite? And where can i buy it??

Thanks!